我正在尝试使用 jFreechart 生成两个图形，每个图形都有 12 个图形(在 jFreeChart 中称为系列)。然而，一些图表被简单地跳过了!我知道我这里有同步问题并尝试使用用户@trashgod 提供给我的方法 here但是我失败了。我知道我使用swingworker的方式不对!不知道怎么解决

每幅图应包含 10 个平行水平直线的图形。正如您在所附图片中看到的，一些行丢失了。这两个数字也必须相同(但不是)。在实践中，我将不得不在不同时间在我的应用程序的多个位置生成多个图形(每个图形之间的随机时间间隔，甚至是单个图形的图形) 非常感谢任何帮助

Exception in thread "AWT-EventQueue-0" java.lang.IllegalArgumentException: This dataset already contains a series with the key Plot 11
    at org.jfree.data.xy.XYSeriesCollection.addSeries(XYSeriesCollection.java:154)
    at swing.FastChart2$MySwingWorker.process(FastChart2.java:192)
    at javax.swing.SwingWorker$3.run(SwingWorker.java:414)
    at sun.swing.AccumulativeRunnable.run(AccumulativeRunnable.java:112)
    at javax.swing.SwingWorker$DoSubmitAccumulativeRunnable.run(SwingWorker.java:832)
    at sun.swing.AccumulativeRunnable.run(AccumulativeRunnable.java:112)
    at javax.swing.SwingWorker$DoSubmitAccumulativeRunnable.actionPerformed(SwingWorker.java:842)
    at javax.swing.Timer.fireActionPerformed(Timer.java:312)
    at javax.swing.Timer$DoPostEvent.run(Timer.java:244)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:733)
    at java.awt.EventQueue.access$200(EventQueue.java:103)
    at java.awt.EventQueue$3.run(EventQueue.java:694)
    at java.awt.EventQueue$3.run(EventQueue.java:692)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:703)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:91) 

package swing;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.EventQueue;
import java.awt.Rectangle;
import java.awt.Shape;
import java.awt.geom.Ellipse2D;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.io.IOException;
import java.util.List;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingWorker;
import org.jfree.chart.*;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.XYItemRenderer;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
import org.jfree.util.ShapeUtilities;

public class FastChart2 extends JFrame {
   private XYSeries [] xySeries ;
   private XYPlot xyPlot;
   private XYSeriesCollection xySeriesCollection;
   private String title;
   private static int instanceNum=0;
   private int figNum=0;

   private ChartPanel chartPanel;

   public  FastChart2(String s) {
      super(s);
      figNum = instanceNum;
      instanceNum++;
      init(s);
   }

   private void init(String s){
      title = s;
      xySeries = new XYSeries[12];
      for (int i = 0; i < xySeries.length; i++) {
         xySeries[i]    = new XYSeries("Plot "+i);  
      }
      xySeriesCollection = new XYSeriesCollection();
      JFreeChart chart = ChartFactory.createScatterPlot(
            title, "X", "Y", xySeriesCollection,
            PlotOrientation.VERTICAL, true, true, false);

      xyPlot =  chart.getXYPlot();
      xyPlot.setDomainCrosshairVisible(true);
      xyPlot.setRangeCrosshairVisible(true);

      chartPanel = createChartPanel(chart);

      add(chartPanel, BorderLayout.CENTER);
      JPanel control = new JPanel();

      add(control, BorderLayout.SOUTH);

      setDefaultCloseOperation(DISPOSE_ON_CLOSE); 
      pack();
      setLocationRelativeTo(null);
      setVisible(true);
   }

   private  ChartPanel createChartPanel(JFreeChart chart) {

      XYItemRenderer renderer = xyPlot.getRenderer();
      renderer.setSeriesPaint(0, Color.magenta);
      renderer.setSeriesPaint(1, Color.green);
      renderer.setSeriesPaint(2, Color.blue);
      renderer.setSeriesPaint(4, Color.black);
      renderer.setSeriesPaint(3, Color.yellow);
      Shape cross = ShapeUtilities.createDiagonalCross(3, 0);
      Shape plus = ShapeUtilities.createRegularCross(4,0);

      for (int i = 0; i <=3; i++) {
         renderer.setSeriesShape(0+i,    new Rectangle(-1, -1, 2, 2));
         renderer.setSeriesShape(4+i,    new Ellipse2D.Float(-2F, -2F, 5F, 5F));  
         renderer.setSeriesShape(8+i,    cross);
      }
      NumberAxis domain = (NumberAxis) xyPlot.getDomainAxis();
      domain.setRange(0,1000);
      NumberAxis range = (NumberAxis) xyPlot.getRangeAxis();
      range.setRange(0,1200);
      return new ChartPanel(chart);
   }


   public  void multiPlot(){
      Thread thread = null;
      thread = new Thread (){
         public void run() {
            final double [] x = new double[1000];
            final double [] y = new double[1000];

            try{    
               for (int k = 0; k < 12; k++) {

                  for (int i = 0; i < y.length; i++) {
                     x[i] = i;
                     y[i] = k*100;
                  }

                  try {
                     Thread.sleep(100);
                  } catch (InterruptedException e) {
                  }

                  plot2d(k % 12, x, y," Fig:"+figNum+" Seri:"+k);
               }
            } catch (Exception e){
               System.out.println();
            }     
         }
      };
      thread.start();
   }


   public synchronized void plot2d( final int iSeriesN,  final double [] dX,  final double [] dY, final String sT){

      if (dY.length != dX.length){
         throw new IllegalArgumentException("Error! inputs x and y have to be of same size.");
      }

            MySwingWorker mySwingWorker = new MySwingWorker( iSeriesN, dX, dY, sT);

            mySwingWorker
            .addPropertyChangeListener(new PropertyChangeListener() {

               public void propertyChange(PropertyChangeEvent pcEvt) {
                  if (pcEvt.getNewValue() == SwingWorker.StateValue.DONE) {
                    System.out.println("done");
                  }
                 if ("progress".equals(pcEvt.getPropertyName())) {
                     System.out.println("progress");
                   }
               }
            });

            mySwingWorker.execute(); 

   }

   private class MySwingWorker extends SwingWorker<Void, Double> {

      private double [] dX ;
      private double [] dY ;
      private String title;
      private int iSeriesN;
      private MySwingWorker(int iSeriesN, double [] ix, double[] iy, String st){
        dX = ix.clone();
        dY = iy.clone();
        title= st;
        this.iSeriesN = iSeriesN;
        xySeriesCollection.removeAllSeries();
        System.out.println("xySeriesCollection.removeAllSeries();");
      }

      @Override
      public Void doInBackground() throws IOException {

    //    chartPanel.getChart().removeChangeListener((ChartChangeListener) chartPanel);


         xySeries[iSeriesN].clear();
         for (int i = 0; i < dX.length; i++) {
            xySeries[iSeriesN].add(dX[i], dY[i]);
         }

         for (int i = 0; i < xySeries.length; i++) {
            setProgress(i * (100 / xySeries.length));
            publish(Double.valueOf(i));
            try {
               Thread.sleep(10);
            } catch (InterruptedException e) {
            } // simulate latency

        }
         return null;
      }


      @Override
      protected void process(List<Double> chunks) {
         for (double d : chunks) {
            xySeriesCollection.addSeries(xySeries[(int) d]);
        }

      }
      @Override
      protected void done() {
          try {


     //        chartPanel.getChart().addChangeListener((ChartChangeListener) chartPanel);
             xySeries[iSeriesN].setKey(title);

          } catch (Exception ignore) {
          }
      }
   }

   public XYSeries addXY(final int iSeriesN, final double [] dX, final double [] dY){
      XYSeries series = new XYSeries("Plot ");

      for (int i = 0; i < dX.length; i++) {
         series.add(dX[i], dY[i]);
      }
      return series;
   }

   public static void main(String args[]) {
      EventQueue.invokeLater(new Runnable() {
         @Override
         public void run() {
            FastChart2 [] demo = new FastChart2[2];
            for (int i = 0; i < demo.length; i++) {
               demo[i] = new FastChart2("Figure "+i);
               demo[i].multiPlot();

            } 

         }
      });
   }
}

最佳答案

I know the way I use swingworker is wrong! I dont know how to fix it

在开始之前我有一些提示:

• 摆脱数组:你有几个数组，你会看到它们 只会把事情搞砸，因为你需要索引和循环 到处都可以和他们一起工作，而且很容易犯错误。 ID 特别是删除这个:

  私有(private) XYSeries [] xySeries;//XYSeriesCollection 旨在保留一个系列列表，所以...

• 不要让您的类从 JFrame(或任何 Swing 组件)扩展，否则不会添加任何功能。您可以改用变量。

• 除了需要修复 SwingWorker 实现之外，更令人不安的是有一个调用此 SwingWorker 的新 Thread。也摆脱它(不需要)。

• 正如@trahsgod 在 this comment 中指出的那样, XYSeriesCollection 是图表的模型，因此关键是使用它。

话虽如此，关于您的 SwingWorker 实现，它应该如下所示:

SwingWorker<Void, XYSeries> worker = new SwingWorker<Void, XYSeries>() {

   @Override
   protected Void doInBackground() throws Exception {
       /* 
        * This part is extracted from your multiPlot() method
        * I've just reduced the scale factor and get rid of double arrays
        */
       int numberOfElements = 100; // this is the number of elementes in X axis    
       for(int y = 0; y < 12; y++) { // we want 12 series

           XYSeries series = new XYSeries("Plot " + y);
           for (int x = 0; x < numberOfElements; x++) {
               series.add(x, y*10); //add x,y point
           }
           publish(series);
           Thread.sleep(100);// just for animation purpose
       }
       return null;              
   }

   @Override
   protected void process(List<XYSeries> chunks) {
       for(XYSeries series : chunks){
           /* 
            * Add the series to the "model" here.
            * It will notify the "view" data has been changed and this last one will be updated
            * It's important make this call here to ensure the "view" is updated in the EDT.
            */
           xySeriesCollection.addSeries(series);
       }
   }
};

工作示例

这是一个基于您的工作的完整工作示例，您可以将其作为起点。希望对您有所帮助:)

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.FlowLayout;
import java.awt.Rectangle;
import java.awt.Shape;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.geom.Ellipse2D;
import java.util.List;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import javax.swing.SwingWorker;
import org.jfree.chart.*;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.XYItemRenderer;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
import org.jfree.util.ShapeUtilities;

public class FreeChartDemo {

  XYSeriesCollection xySeriesCollection;
  String title;

  public FreeChartDemo(String title){
      this.title = title;
  }

  public void initGUI(){

      JButton clearChart =  new JButton("Clear chart");
      clearChart.addActionListener(new ActionListener() {
          @Override
          public void actionPerformed(ActionEvent e) {
              xySeriesCollection.removeAllSeries();
          }
      });

      JButton fillChart = new JButton("Fill chart") ;
      fillChart.addActionListener(new ActionListener() {
          @Override
          public void actionPerformed(ActionEvent e) {
              xySeriesCollection.removeAllSeries();
              fillChart();
          }
      });

      JPanel controlPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT));
      controlPanel.add(clearChart);
      controlPanel.add(fillChart);

      JPanel content = new JPanel(new BorderLayout(5, 5));
      content.add(getFreeChartPanel(), BorderLayout.CENTER); //add the ChartPanel here
      content.add(controlPanel, BorderLayout.SOUTH);

      JFrame frame = new JFrame("JFreeChart demo");
      frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
      frame.getContentPane().add(content);
      frame.pack();
      frame.setLocationRelativeTo(null);
      frame.setVisible(true);
   }

   private JPanel getFreeChartPanel(){
       xySeriesCollection = new XYSeriesCollection();

       JFreeChart chart = ChartFactory.createScatterPlot(title, "X axis", "Y axis", xySeriesCollection, 
                                                         PlotOrientation.VERTICAL, true, true, false);       
       XYPlot plot = chart.getXYPlot();
       plot.setDomainCrosshairVisible(true);
       plot.setRangeCrosshairVisible(true);

       XYItemRenderer renderer = plot.getRenderer();
       renderer.setSeriesPaint(0, Color.magenta);
       renderer.setSeriesPaint(1, Color.green);
       renderer.setSeriesPaint(2, Color.blue);
       renderer.setSeriesPaint(4, Color.black);
       renderer.setSeriesPaint(3, Color.yellow);

       Shape cross = ShapeUtilities.createDiagonalCross(3, 0);

       for (int i = 0; i <= 3; i++) {
           renderer.setSeriesShape(0+i, new Rectangle(-1, -1, 2, 2));
           renderer.setSeriesShape(4+i, new Ellipse2D.Float(-2F, -2F, 5F, 5F));  
           renderer.setSeriesShape(8+i, cross);
       }

       NumberAxis domain = (NumberAxis) plot.getDomainAxis();
       domain.setRange(0,100);
       NumberAxis range = (NumberAxis) plot.getRangeAxis();
       range.setRange(0,120);

       return new ChartPanel(chart);
   }

   private void fillChart() {
       SwingWorker<Void, XYSeries> worker = new SwingWorker<Void, XYSeries>() {

           @Override
           protected Void doInBackground() throws Exception {
               int numberOfElements = 1000;    
               for(int y = 0; y < 12; y++) {
                   XYSeries series = new XYSeries("Plot " + y);
                   for (int x = 0; x < numberOfElements; x++) {
                       series.add(x, y*10); //add x,y point
                   }
                   publish(series);
                   Thread.sleep(100);// just for animation purpose
               }
               return null;              
           }

           @Override
           protected void process(List<XYSeries> chunks) {
               for(XYSeries series : chunks){
                   xySeriesCollection.addSeries(series);
               }
           }
       };
       worker.execute();
   }

   public static void main(String args[]) {
      SwingUtilities.invokeLater(new Runnable() {
         @Override
         public void run() {
             new FreeChartDemo("JFreeChart #1").initGUI();
             new FreeChartDemo("JFreeChart #2").initGUI();
         }
      });
   }
}

关于java - 使用 jFreeChart 的多个图形中的多个图形，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/20086441/